Attachment for grain-drills.



PATENTED NOV. 3 1903..

PVH. MURPHY. ATTACHMENT POR'GRAIN DRILLS. APPLICATION FILED MAY 2 1903 N0 MODEL.

u: NGRRIS PETERS m. maumcu WASHINGTON n c tie. 74.3,a1i.

UNITED STATES tamed November a, 1903.

PATENT FFICE.

PATRICK HENRY MURPHY, OF ST. PAUL, MINNESOTA, ASSIGNOR OF ONE- HALF TO JONOTHAN WOLFENDEN, OF ST. PAUL, MINNESOTA.

ATTACHMENT FOR GRAIN-'D RILLS.

SPECIFICATION forming part of Letters Patent N 0. 743,31 1, dated November 3, 1903. Application filed May 2, 1903. Serial No- 155,404. (No model.)

. To all'whom it may concern:

PHY, a citizen of the'United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented a new and useful Attachmentfor Grain-Drills, of which the following is a specification.

This invention relates to drill tubes and shoes for grain-drills and seed-drilling machines of all kinds; and it has for its object to provide a drill-tube with a detachable shoe, each being made in a single piece and doing away with all shearing, punching, welding, riveting, and heating operations, the object of the invention being to provide an article of the class described which shall possess superior advantages in point of simplicity, durability, and general efficiency.

With these and other ends in view my invention consistsin the improved construction, arrangement, and combination of parts,which will be hereinafter fully'described, and particularly pointed out in the claims.

In the accompanying drawings, Figure l is a side elevation of a drill tube and shoeconstructed in accordance with the principles of my invention. Fig. 2 is a vertical sectional view of as much of the same as is necessary to illustrate my invention. spective view showing the rear portion of a shoe detached from the drill-tube. Fig. 4 is a perspective view showing the lower end of the drill-tube. Fig. 5 is a vertical sectional view taken through the lower end of the tube and shoe on the line 5 5 in Fig. 2. Fig. 6 is a sectional view taken on the line 6 6 in Fig. 1.

Corresponding parts in the several figures are indicated bysimilarnumerals of reference.

The drill-tube 1 of my invention is an approximately vertical seamless tube provided at its lower end with a forward protuberance 2. Upon the under side of the latter and in front of the lower or discharge end. of the seed-tube 1 is disposed a dovetail member 3, which may be of any desired construction. Thus, for instance, it may be in the shape of a rectangular block provided at its lower edges with longitudinal flanges, as indicated at 4.

5 designates the shoe, which is of the ordinary f urrow-opening construction and which Fig. 3 is a peris provided with a recess 5 in its upper side, extending from the rear edge of said shoe and in a forward direction, said recess being of a suitable construction to receive the dovetail member 3, which it engages, as will readily the protruding portion 2 of the tubular member of the device. When the parts are thus engaged together,transversely-disposed bolts or rivets may be employed, as shown at 7, for the purpose of securing the parts together.

The rear edge of the dovetail member 3 is provided with a vertical concave recess 8, forming a continuation of the seed-tube and also connecting with a concavity 9 in the rear edge of the shoe, whereby the seed is guided into the furrow opened by the said shoe. The rear edge of the tube may also be provided with a downwardly-projecting guard or seed* guiding member 11. The lower end of the tube is also preferably provided with the ordinary eye 12 for the attachment of the covering chain or roller.

For the purpose of facilitating the assemblage of the parts the dovetail member 3 and its receiving-recess 5 may be wedge-shaped, as shown in the figures of the drawings.

The operation and advantages of my invention will be readily understood from the foregoing description taken in connection with the drawings hereto annexed. Each part of the drill is made in a single piece, preferably by casting, and no grinding, trimming, or other manipulation is required to fit the parts together for operation. The consequence, is that a durable, strong, and useful article may be produced at a minimum expense.

I desire it to be understood that while I have in the foregoing described a simple and preferred form of my invention I do not consider myself limited by structural details herein set forth, but reserve the right to all such changes, modifications, and alterations as lie Within the scope of my invention and which may be resorted to without departing from the spirit or sacrificing the utility of the same.

Having thus described my invention, I claim 1. In a device of the class described, adrilltube having a forward protuberance at its lower end and provided with a downwardlyeXtending block having outstanding flanges at its lower edges, in combination Withashoe recessed for engagement with said block and flanges and having a stop forming an abutment for the forward protuberance of the drill-tube.

2. In a device of the class described, adrilltube having a forward protuberance at its lower end and provided with a downward-extending block having lateral outstanding flanges at its lower edge, said block being transversely perforated and provided in its rear-side with a concave channel alining with the bore of the seed-tube, in combination with a shoe recessed to accommodate the flanged block of the drill-tube, having a stop forming an abutment for the nose of the protuberance of said drill-tube and perforated transversely for the reception of a connecting-bolt.

3. In a device of the class described, a drilltube provided at its lower end with a forward protuberance and with a downwardly-extending block having lateral outstanding flanges, a transverse perforation and a concave channel in its rear side forming a continuation of the bore of the drill-tube, the latter being also provided with a deflecting-plate parallel to and spaced from said block, in combination with a drill-shoe recessed for the reception of the flanged block and having a stop forming an abutment for the protuberance of the drilltube, said shoe being also adapted to receive between the sides thereof the deflecting-plate in rear of the flanged block, and transverse connecting means.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

PATRICK HENRY MURPHY.

Witnesses: 7

JOHN SOI-IMANN, J. H. RADCLIFFE. 

